Jesse B. Schallek, Ph.D., assistant professor in the Department of Ophthalmology, describes a new, noninvasive approach to assess vascular health in the journal eLife. Schallek’s lab, part of the Flaum Eye Institute at the University of Rochester, developed a method to visualize how single blood cells flow through vessels of the eye using adaptive optics imaging. Schallek’s team developed high-resolution adaptive optics combined with fast camera capture to visualize single-cell blood flow dynamics in a living mouse eye. “We’re able to image single blood cells and measure their speed. Remarkably, this can be achieved in vessels of all sizes, from the smallest capillaries to the largest retinal vessels,” said Schallek. “This approach may eventually provide a view of patient vascular health without the need for blood draws or dyes. Click here to read more about their research.